Murray's winning return

Britain's Andy Murray made a winning return to Centre Court after his Wimbledon final defeat as the world number four beat Switzerland's Stanislas Wawrinka 6-3, 6-3 in the first round of the Olympics on Sunday.
Murray was back in action on the All England Club's showpiece arena exactly three weeks after crying tears of frustration following his four-set defeat against Roger Federer in his maiden Wimbledon final.
Murray played the first full match under the Centre Court roof when he defeated Wawrinka in a five-set classic in the fourth round in 2009 and the pair had to duel indoors again after hail and rain forced the arena to be covered on Sunday.
The Scot had lost his first match since the Wimbledon final when he and brother Jamie were beaten in the doubles on Saturday.
But singles gold is Murray's real aim and he looked back in the groove against Wawrinka.
Wawrinka won doubles gold with Federer in Beijing in 2008 and the Swiss great was in the players' box to support his compatriot.
But women's world number two Agnieszka Radwanska suffered a miserable return to Wimbledon as Olympic Games tennis was played indoors for the first time in 100 years.
Second seeded Radwanska, defeated by Serena Williams in the Wimbledon final three weeks ago, suffered more Centre Court disappointment as she was beaten 7-5, 6-7 (5/7), 6-4 by Germany's Julia Goerges in the first round.
Hail and heavy rain had drenched the All England Club in south-west London just as play was set to get underway with organisers deciding to shut the Centre Court roof.
It was the first time Olympic tennis has been played indoors since the Stockholm Games of 1912.
Radwanska, 23, was the first Pole to reach a Grand Slam singles final since 1939 when she got to this year's Wimbledon title match, an achievement which lifted her to a career-high second place in the world rankings.
Later Sunday, world number two Novak Djokovic was up against Italy's Fabio Fognini while Maria Sharapova, the Wimbledon champion in 2004, was facing Israel's Shahar Peer.